MCP servers, called rather than listed

Every remote server in the official MCP registry, sent one real initialize handshake. 16,923 servers across 11,823 hosts.

Search what these servers can do · read the measurement

Last checked 2026-09-06. We send a handshake, we do not authenticate and we do not call a tool.

Gated is not broken. 4,068 of these servers answer with a 401 or 403. They are running and want a credential we do not have. A checker that treats them as dead is wrong about 24.0% of the registry before it starts, so we count them separately and always will.

16,923 matching.

serverresulttoolshost
xyz.lonestaroracle/mcp-server
https://mcp.lonestaroracle.xyz/mcp
answered, not MCP not listed mcp.lonestaroracle.xyz
xyz.mingxinstorage/mingxin-mcp-server
https://www.mingxinstorage.xyz/api/mcp
answered, not MCP not listed www.mingxinstorage.xyz
xyz.peerlytics/peerlytics
https://peerlytics.xyz/api/v1/mcp
404 not listed peerlytics.xyz
xyz.perpvue/mcp
https://perpvue.xyz/mcp
unreachable not listed perpvue.xyz
xyz.perpvue/mcp
https://mcp.perpvue.xyz/mcp
unreachable not listed mcp.perpvue.xyz
xyz.pflow.sim/whatif
https://sim.pflow.xyz/mcp
gated, needs a credential not listed sim.pflow.xyz
xyz.quillen/quillen
https://www.quillen.xyz/api/mcp
gated, needs a credential not listed www.quillen.xyz
xyz.redstringapp/red-string
https://app.redstringapp.xyz/mcp
gated, needs a credential not listed app.redstringapp.xyz
xyz.regimeshift/mcp
https://mcp.regimeshift.xyz/sse
404 not listed mcp.regimeshift.xyz
xyz.tenzro/tenzro
https://mcp.tenzro.xyz/mcp
unreachable not listed mcp.tenzro.xyz
xyz.tenzro/tenzro-canton
https://canton-mcp.tenzro.xyz/mcp
unreachable not listed canton-mcp.tenzro.xyz
xyz.tenzro/tenzro-chainlink
https://chainlink-mcp.tenzro.xyz/mcp
unreachable not listed chainlink-mcp.tenzro.xyz
xyz.tenzro/tenzro-ethereum
https://ethereum-mcp.tenzro.xyz/mcp
unreachable not listed ethereum-mcp.tenzro.xyz
xyz.tenzro/tenzro-layerzero
https://layerzero-mcp.tenzro.xyz/mcp
unreachable not listed layerzero-mcp.tenzro.xyz
xyz.tenzro/tenzro-lifi
https://lifi-mcp.tenzro.xyz/mcp
unreachable not listed lifi-mcp.tenzro.xyz
xyz.tenzro/tenzro-solana
https://solana-mcp.tenzro.xyz/mcp
unreachable not listed solana-mcp.tenzro.xyz
xyz.tollboothswap.api/tollbooth
https://api.tollboothswap.xyz/mcp
404 not listed api.tollboothswap.xyz
xyz.utilityhouse/agentready-woo
https://app.utilityhouse.xyz/mcp/{store_id}
404 not listed app.utilityhouse.xyz
xyz.verifiedky/sentinel-402
https://mcp.verifiedky.xyz/mcp
server error not listed mcp.verifiedky.xyz
xyz.virifi.numetric-mcp/numetric
https://numetric-mcp.virifi.xyz/mcp
gated, needs a credential not listed numetric-mcp.virifi.xyz
za.co.netbrainis/catalogue
https://mcp.netbrainis.co.za/mcp
unreachable not listed mcp.netbrainis.co.za
za.co.pccswart.radar/acel-demand-radar
https://radar.pccswart.co.za/mcp/
JSON-RPC error not listed radar.pccswart.co.za
zone.waggle/waggle
https://api.waggle.zone/mcp
gated, needs a credential not listed api.waggle.zone
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